Newly discovered ergot alkaloids in Sorghum ergot Claviceps africana occurring for the first time in Israel. Shimshoni JA(1), Cuneah O(2). Aust Vet J. Feb;78(2) Sorghum ergot (Claviceps africana) associated with agalactia and feed refusal in pigs and dairy cattle. Blaney BJ(1). PDF | On Jan 1, , S. Bhuiyan and others published Control of ergot ( Claviceps africana) on sorghum seed with fungicides.

Author: Akikasa Nektilar
Country: Honduras
Language: English (Spanish)
Genre: Art
Published (Last): 2 September 2014
Pages: 363
PDF File Size: 2.45 Mb
ePub File Size: 14.95 Mb
ISBN: 879-8-56932-577-4
Downloads: 5444
Price: Free* [*Free Regsitration Required]
Uploader: Brarisar

The distribution map includes records based on specimens of C. The common name for ergotism is “St. Transactions of the British Mycological SocietyLondon, v.

Achnatherum robustum Sleepy Grass Claviceps spp. The Clavicfps isolates and three isolates from South Africa were identical, suggesting Africa as the origin of the American clones.

The optical density of each solution was measured against the blank reagents incubated with water at nm wavelength using a spectrophotometer MSE Clavixeps.

Ergot – Wikipedia

Metabolic pathway of oligosaccharides in sorghum honeydew caused by Claviceps africana. Indian Phytopathology, 35 3: The system was combined by two phases. The surfaces of the panicle, seed, leaves, stalk and soil also become smeared by the dripping honeydew and appear africwna white.

Sclerotia may be important as vehicles of conidia in the attached sphacelia. Conidia showed poor survival on paper.

Standard glucose and fructose solutions m g mL -1prepared in saturated benzoic acid and diluted with water, were treated similarly and gave linear calibration curve and analysis of variance ANOVA was used for statistical analysis. For a full comparison of C. Note the white droplet surfaces, indicative of secondary conidiation. The use of assays, with specially-designed PCR primers and probes, for the detection of C. Diseases of sorghum in Ethiopia.

Futrell and Webster, ; Futrell and Webster, ; Mower et al. The effects of temperature and relative humidity on infection of Sorghum bicolor male sterile line AQL 33 by C.


Quarantine of seed is thus futile for controlling the spread of C.

There was a problem providing the content you requested

Insects, including flies and moths, carry conidia of Claviceps species, but it is unknown whether insects play a role in spreading the fungus from infected to healthy plants.

Crop Protection, 22 1: Tests by Prom et al. More information about modern web browsers can be found at http: The mannitol in the disaccharide 1- b -D-fructofuranosyl-D-mannitol is randomly linked or to fructose and addition of an extra fructose, also linked by its 2-position to the remaining 1- or 6- positions of mannitol in the disaccharide, gives the trisaccharide 1,6-di- b -D-fructofuranosyl-D-mannitol. A role of b-glucanases in the parasitism of cereals afridana Claviceps purpurea.

A phase employed a Afrjcana quadrupole mass spectrometer system in electron impact mode, and B a VG autospek Q system in chemical ionisation with negative ion mode to show molecular ions of derivatised monosaccharides. Anthony was a 3rd century Egyptian ascetic who lived by the Red Sea and was known for long fasting in which he confronted terrible visions and temptations sent from the Devil. Distribution, physiology and metabolism. At the wfricana of the cropping season the pathogen exists in the form of sphacelia and sclerotia africanz either may enable survival.

Molds, Epidemics, and History. CAB International, Map The alkaloid content of ergot bodies afridana between 0. It may, therefore, be important to maintain the exclusion of the east strain from the Americas and Africa to protect the animal feed industry. A mid-September survey was conducted in el Bajio, primarily in the state of Guanajuato, and adjacent areas in the states c,aviceps Michoacan and Jalisco.

Title Honeydew Caption Honeydew oozing from sorghum florets infected with C. Poultry Science, 78 Biological Control Bhuiyan et al. All of their piglets died, apparently from starvation: Spread and importance of ergot in the western hemisphere.

Laboratory, greenhouse, and field assessment afficana fourteen fungicides for activity against Claviceps africana, causal agent of sorghum ergot. The separation of sugars by enzymatic reaction. Caporael posited in that the hysterical symptoms of young women that had spurred the Salem witch trials had been the result of consuming ergot-tainted rye.


Spread of Ergot of Sorghum (Claviceps africana) in Central Mexico

Biochemical physiopathology of some ergot afrixana and other honeydew-producing plant parasites. The alditol mannitol arises by reduction of fructose in the sphacelial tissue and the formation of oligosaccharides is achieved as cell-associated metabolism. Plant Disease, 84 4: In Brazil, three to four ground sprays of propiconazole or tebuconazole triazole fungicides applied at 5- to 7-day intervals were successful at controlling ergot in the A-lines of seed production plots in the absence of rains Ferreira et al.

Analysis of Claviceps africana and C. He writes that Beowulf, which he translates as barley-wolfsuggests a connection to ergot which in German was known as the ‘tooth of the wolf’. Occurrence of ergot sugary disease incited by a Sphacelia sp. Stearns clavicesp its value in saving doctors time and relieving women of the calviceps of long labor.

Although there are deep recesses in sphacelia, the efficacy of chemical seed treatment, which is essentially superficial, at reducing germination of conidia diffusing from deep within has remarkable impact Odvody et al. Although they are present throughout the day in Zimbabwe, there is a sharp rise in the incidence of secondary conidia at nightfall Frederickson et al. Bennett A diary entry from the time describes that as soon as people ate the poisoned bread they became dizzy, with such strong contractions of the nerves that those who did not die from the first day, find their hands and feet falling from them, as from frostbite.

Glucose was used by the pathogen as nutritional source. In field affricana in Zimbabwe, C.

Notes on some south Indian fungi.